根据常年杂草普查结果,玉米田杂草有22科、38属、43种,其中主要杂草有马唐、稗草、狗尾草、牛筋草、反枝苋、马齿苋、铁苋菜等。而有些杂草如马唐、刺儿菜、鸭跖草、苘麻、田旋花、扁蓄、苍耳、水花生等用常规药剂则难以防治。下面介绍一下这些杂草及其防治策略。1.鸭跖草药剂防治鸭跖草,要掌握在鸭跖草二叶期到三叶期(分枝前),用药时间越早,防治效果越好,从而减少分枝期和 According to the results of the annual weed survey, there are 22 families, 38 genera and 43 species of weeds in corn field. The main weeds are crabgrass, barnyardgrass, foxtail grass, goosegrass, Amaranthus retroflexus, purslane, iron amaranth and so on. Some weeds, such as crabgrass, sasakiya, Commelina, Abutilon theodalis, flat storage, cocklebur, water peanuts and other conventional drugs are difficult to control. Here are some of these weeds and their control strategies. 1. Commelina communis control Commelina communis, to grasp the second leaf period to Commelina stage (before branching), the medication time is earlier, the better the control effect, thereby reducing the branching period and